libcxx/test/std/ranges/robust_against_poison_pills.compile.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11, c++14, c++17
  10
  11 // <compare>, <iterator>, <ranges>
  12
  13 // ADL should be performed. Ordinary unqualified lookup should not be performed.
  14
  15 namespace ns {
  16 struct StructWithGlobalFunctions {};
  17 } // namespace ns
  18
  19 struct ConvertibleToCmpType;
  20 ConvertibleToCmpType strong_order(const ns::StructWithGlobalFunctions&, const ns::StructWithGlobalFunctions&);
  21 ConvertibleToCmpType weak_order(const ns::StructWithGlobalFunctions&, const ns::StructWithGlobalFunctions&);
  22 ConvertibleToCmpType partial_order(const ns::StructWithGlobalFunctions&, const ns::StructWithGlobalFunctions&);
  23
  24 int&& iter_move(const ns::StructWithGlobalFunctions&);
  25 void iter_swap(const ns::StructWithGlobalFunctions&, const ns::StructWithGlobalFunctions&);
  26
  27 int* begin(const ns::StructWithGlobalFunctions&);
  28 int* end(const ns::StructWithGlobalFunctions&);
  29 int* rbegin(const ns::StructWithGlobalFunctions&);
  30 int* rend(const ns::StructWithGlobalFunctions&);
  31 unsigned int size(const ns::StructWithGlobalFunctions&);
  32
  33 #include <compare>
  34 #include <ranges>
  35 #include <type_traits>
  36
  37 struct ConvertibleToCmpType {
  38   operator std::strong_ordering() const;
  39   operator std::weak_ordering() const;
  40   operator std::partial_ordering() const;
  41 };
  42
  43 struct StructWithHiddenFriends {
  44   friend ConvertibleToCmpType strong_order(const StructWithHiddenFriends&, const StructWithHiddenFriends&);
  45   friend ConvertibleToCmpType weak_order(const StructWithHiddenFriends&, const StructWithHiddenFriends&);
  46   friend ConvertibleToCmpType partial_order(const StructWithHiddenFriends&, const StructWithHiddenFriends&);
  47
  48   friend int&& iter_move(const StructWithHiddenFriends&);
  49   friend void iter_swap(const StructWithHiddenFriends&, const StructWithHiddenFriends&);
  50
  51   friend int* begin(const StructWithHiddenFriends&);
  52   friend int* end(const StructWithHiddenFriends&);
  53   friend int* rbegin(const StructWithHiddenFriends&);
  54   friend int* rend(const StructWithHiddenFriends&);
  55   friend unsigned int size(const StructWithHiddenFriends&);
  56 };
  57
  58 // [cmp.alg] ADL should be performed.
  59 static_assert(std::is_invocable_v<decltype(std::strong_order), StructWithHiddenFriends&, StructWithHiddenFriends&>);
  60 static_assert(std::is_invocable_v<decltype(std::weak_order), StructWithHiddenFriends&, StructWithHiddenFriends&>);
  61 static_assert(std::is_invocable_v<decltype(std::partial_order), StructWithHiddenFriends&, StructWithHiddenFriends&>);
  62
  63 // [cmp.alg] Ordinary unqualified lookup should not be performed.
  64 static_assert(
  65     !std::is_invocable_v<decltype(std::strong_order), ns::StructWithGlobalFunctions&, ns::StructWithGlobalFunctions&>);
  66 static_assert(
  67     !std::is_invocable_v<decltype(std::weak_order), ns::StructWithGlobalFunctions&, ns::StructWithGlobalFunctions&>);
  68 static_assert(
  69     !std::is_invocable_v<decltype(std::partial_order), ns::StructWithGlobalFunctions&, ns::StructWithGlobalFunctions&>);
  70
  71 // [iterator.cust] ADL should be performed.
  72 static_assert(std::is_invocable_v<decltype(std::ranges::iter_move), StructWithHiddenFriends&>);
  73 static_assert(
  74     std::is_invocable_v<decltype(std::ranges::iter_swap), StructWithHiddenFriends&, StructWithHiddenFriends&>);
  75
  76 // [iterator.cust] Ordinary unqualified lookup should not be performed.
  77 static_assert(!std::is_invocable_v<decltype(std::ranges::iter_move), ns::StructWithGlobalFunctions&>);
  78 static_assert(!std::is_invocable_v<decltype(std::ranges::iter_swap),
  79                                    ns::StructWithGlobalFunctions&,
  80                                    ns::StructWithGlobalFunctions&>);
  81
  82 // [range.access] ADL should be performed.
  83 static_assert(std::is_invocable_v<decltype(std::ranges::begin), StructWithHiddenFriends&>);
  84 static_assert(std::is_invocable_v<decltype(std::ranges::cbegin), StructWithHiddenFriends&>);
  85 static_assert(std::is_invocable_v<decltype(std::ranges::end), StructWithHiddenFriends&>);
  86 static_assert(std::is_invocable_v<decltype(std::ranges::cend), StructWithHiddenFriends&>);
  87 static_assert(std::is_invocable_v<decltype(std::ranges::rbegin), StructWithHiddenFriends&>);
  88 static_assert(std::is_invocable_v<decltype(std::ranges::crbegin), StructWithHiddenFriends&>);
  89 static_assert(std::is_invocable_v<decltype(std::ranges::rend), StructWithHiddenFriends&>);
  90 static_assert(std::is_invocable_v<decltype(std::ranges::crend), StructWithHiddenFriends&>);
  91 static_assert(std::is_invocable_v<decltype(std::ranges::size), StructWithHiddenFriends&>);
  92
  93 // [range.access] Ordinary unqualified lookup should not be performed.
  94 static_assert(!std::is_invocable_v<decltype(std::ranges::begin), ns::StructWithGlobalFunctions&>);
  95 static_assert(!std::is_invocable_v<decltype(std::ranges::cbegin), ns::StructWithGlobalFunctions&>);
  96 static_assert(!std::is_invocable_v<decltype(std::ranges::end), ns::StructWithGlobalFunctions&>);
  97 static_assert(!std::is_invocable_v<decltype(std::ranges::cend), ns::StructWithGlobalFunctions&>);
  98 static_assert(!std::is_invocable_v<decltype(std::ranges::rbegin), ns::StructWithGlobalFunctions&>);
  99 static_assert(!std::is_invocable_v<decltype(std::ranges::crbegin), ns::StructWithGlobalFunctions&>);
 100 static_assert(!std::is_invocable_v<decltype(std::ranges::rend), ns::StructWithGlobalFunctions&>);
 101 static_assert(!std::is_invocable_v<decltype(std::ranges::crend), ns::StructWithGlobalFunctions&>);
 102 static_assert(!std::is_invocable_v<decltype(std::ranges::size), ns::StructWithGlobalFunctions&>);